ZYMW2-1600 Air Circuit Breaker Draw-out Type Acb Fixed Type 400VAC/800VAC 1600AMP 3/4p Acb

Application Scope:

The W2 series air circuit breaker (hereinafter referred to as "breaker") is suitable for AC 50Hz circuits with rated voltages of 400V and 800V, and rated currents up to 1600A. It is primarily used to distribute electrical energy and to protect circuits and power-supply equipment from overload, under-voltage, short-circuit, and single-phase earthing faults. With intelligent and selective protection functions, the breaker is ideal for use in power stations, factories, mines (for 800V), and modern high-rise buildings, particularly in the distribution systems of intelligent buildings.

This breaker conforms to IEC 60947-2 and GB 14048.2 standards. The entire series has passed CCC certification and CB certification from SEMKO.

• Temperature: -5℃ to +40℃; 24-hour average not to exceed +35℃.

• Elevation: Installation altitude should not exceed 2000m.

• Humidity: At +40℃, relative humidity should not exceed 50%. Higher humidity allowed at lower temperatures. Max 90% relative humidity when average temperature is +25℃ in the most humid month.

• Dew: Consider the effect of dew due to temperature changes.

• Pollution Grade: Grade 3.

• Installation: Follow manual instructions. Vertical inclination should not exceed 5°.

  
  

Installation and usage:

Installation

  

ZYMW2 Moulded Case Circuit Breaker		1600
Rated ultimate short circuit Breaking capacity (KA)		Icu=65kA            400V 20kA 800V Ics=lcw=50kA     400V 15kA 800V
Rated current In(A)		200A  400A  630A  800A  1000A  1600A
Number of poles		3P/4P
Rated voltage Ue(V)		400V/800V
Rated insulation voltage Ui(A)		1000V
Rated current of N-pole IN(A)		50%In  100%In
Fixed disconnection time		23~32ms
Intelligent Controller	Standard type(M)   ●   ●   ●   ●   ●
	Communication type(H)
Operation Performance-Nce	Electrical Life           500
	Mechanical Life	Non-maintenance    2500
		Maintenance            10000
Connection Pattern                                                                               Horizontal  Vertical

Kind Instructions: This product has a drawer type with a three position locking device for "seperation", "testing", and "connection" to prevent users from misoperating when in the corresponding indicated position, the red button will pop up and cannot proceed to the next step without resetting.

Control unit

The intelligent controller is the core part of the circuit breaker. It is classified into two types: standard and communication. The latter has the additional function of communication compared to the former.

Over-current protection characteristic

Long-time delay over-current protection ,inverse time-delay acting characteristic.

Rated Current                 Error                  Current              Acting time               Time  Rang(Irl)                                                                                                                error
0.4~1    ±10%	1.05Ir1               No acting after two hours
	1.3Ir1                 Acting within one hour
	1.5Ir1                 15   30   60   120   240   480   ±10％
	2.0Ir1                 8.4   15.9   33.7   67.5   135   270 ±10％

Short-time delay over-current protection acting characteristic

Inverse time-delay acting at low-multiple current, and 12Ts=(8Irl)²ts, where  is the actual current, Ts is the actual acting time, and ts is the setting delay time. When current exceeds 8Irl, automatic conversion to definite time-delay acting occurs. When short-time delay is definite time-delay, low-multiple current can also be definite time-delay characteristic.

Rated                 Error                Setting delay time                      Return time                   time error  Current

Lr2                                               Ts(s)                                           (s)

1～15                ±10％                 0.1    0.2    0.3    0.4    0.06    0.14    0.23    0.35    ±15％

Instantaneous action characteristic

Rated current(lr3)                                         Error

1.0In~50/75kA                                              ±15%

Test

panel keys	Check the time-current characteristic and  tripping               Performance mechanism of intelligent controller
	Check the time-current characteristic of  Non-tripping       intelligent controller

Earthing fault protection (four types)

Select W2 three-pole circuit breaker (out-connected current transformer not appended )for three-phase three-wire system.

Earthing fault protection signal is the vector sum of three-phase current.

Protection characteristic is definite time-delay protection.

Select W2 four-pole circuit breaker for three-phase four-wire system

Earthing fault protection signal is the vector sum of three-phase current and N-pole current protection

characteristic is definite time-delay protection

Select W2 three-pole circuit breaker for three-phase four-wire system

Connecting neutral-pole current transformer for earth fault protection（connect25#, 26#terminals ）

Connecting neutral-pole current transformer for earth fault protection (connect25#,26#terminals)

Earth fault protection signal is vector sum of three-phase current and N pole current

Protection characteristic is definite time-delay protection

Select W2 three-pole circuit breaker for TN-S system.

Connecting current transformer for earth fault protection (connect 25#, 26#terminals)

Protection characteristic is definite time-delay protection.

Characteristic of monitoring with load

Pattern 1: it can control two-circuit load ,send out contact signal and break sub-load when the

operating current surpasses super-overload long time-delay inverse time-delay setting current lu ,thus

ensure the power supply of main system.

Pattern2: Only control one-circuit load ,when operating current surpasses,llc1setting value ,signal is

sent out to break the sub-load ,thus ensure the normal power-supply of main system .if the main

current falls to llc2 setting value after reaking lasts for some time , comtroller can make broken load

and recover the supply of whole system.

Single-phase earthing fault protection characteristic

Single-phase earthing fault means the metal-property earthing protection when fault current exceeds

several hundred amperes ,which is generally applied to direct center earthing system.

When earthing fault protection is definite time-delay acting, the setting is as follows:

Knowledge of accessories

Shunt release

Except manual-operated to directly break the circuit breaker for special products

It can be remote-operated to break the circuit breaker

Characteristic

Rated control power voltage Us(V)	AC400, AC230, AC127	DC220, 110
Action voltage(V)	(0.7~1.1)Us
Power consumption	40VA	40W
Breaking time	Less than 30Ms

Forbid making the power for long time to avoid being damaged.

Under-voltage release

Under-voltage release

Users can select it or not if need.

Under-voltage release is used to break circuit breaker and protect the equipment(such as motor) when under-voltage or voltage-failure happens, or automatically break the under-voltage circuit of power supply system, improves the reliability and safety (such as dual-circuit).

Its action-pattern is classified into instantaneous action and time-delay action.

Delay-time of under-voltage time-delay release is classified into three types of 1s, 3s and 5s, and the accuracy is ±15％. Within 1/2 time-delay scope, Circuit breaker don't break when power voltage recovers and exceeds 85％ Ue.

Characteristic

Rated control power voltage Ue(V)	AC400, 230, 127	DC220, 110
Action voltage(V)	(0.35~0.7)Ue
Reliable switching voltage(V)	(0.85~1.1)Ue
Reliable non-switching voltage(V)	V/0.35Ue
Power consumption	48VA(W)

Make the power before operating the circuit breaker.

Closing electromagnet

After motor finishes storing energy, closing electromagnet can instantly release spring-force of operation mechanism, and quickly close the circuit breaker.

Characteristic

Rated control power voltage Ue (V)	AC400, 230, 127	DC220、110
Action voltage(V)	(0.85～1.1)Ue
Power consumption	48VA	40W
Storing-energy time	Less than 70Ms

Forbid making the power for long time to avoid being damaged.

Motor-driven energy-storage mechanism

With automatic re-storing energy function ,which is convenient for switc-hing duplicate power supply.

Characteristic

Rated control power voltage Ue (V)	AC400, 230	DC220, 110
Action voltage(V)	(0.85~1.1)Ue
Power consumption	192VA	192W
Storing-energy time	Less than 5s

Forbid making the power for long time to avoid being damaged.

Auxiliary contact

Standard model: 4-NO(normal open) and 4-NC(normal closed)

Special models: 3-NO & 5-NC, 5-NO & 3-NC, 6-NO & 2-NC, 2-NO & 6-NC

Rated value

Rated voltage(V)	Rated heating current | th(A)	Rated control capacity
AC230	6	300VA
AC400	6	300VA
DC220	6	60W

Break the locking device

Breaking the locking device will cause the breaking button to lock in the pressed position, preventing the breaker from closing.

For drawer-type breakers: 

1.  When the breaker is in the breaking position, pull out the lock rod.

2.  Lock the breaker with a padlock. After locking, the breaker cannot reach the "test" or "making" positions (padlock provided by the user).
   

Locks and keys are provided as followes:

• Each circuit breaker comes with a separate lock and key.

• Two circuit breakers come with two identical locks and keys.

• Three circuit breakers come with three identical locks and two identical keys.

Wire-cable mechanical interlock

It can realize the interlock of two sets of horizontally or vertically installed three-pole or four-pole drawer-type or fixed-type circuit breakers.

Connecting-rod type mechanical interlock

Three sets of vertical-installed three-pole or four-pole drawer-type or fixed-type circuit breakers realize

the interlock between one breaker with another two different-state breakers.

Secondary circuit wiring diagram

Wiring diagram of standard -type intelligent controller

Note: If the control voltage of Q, F, X are different from each other, they can be connected to different power sources. If the model ST intelligent release uses direct current power, it must pass through U1 and U2 before being directly connected to termination 1 or 2.

Circuit explanation for signal output

Broken-line parts shall be provided by customers.

Terminals 6#～7# can output NC (normally closed) contact if required by users.

Terminal 35# can be directly connected to power (automatic pre-storing energy) or alternatively connected to power after connecting the NO button (manual-controlled pre-storing energy).

To avoid damage to the shunt release and closing electromagnet, one group of NO (shunt) or NC (close) contact should be separately connected to the control circuit.

Flaut reason and maintenance method

Fault description	Reason analysis	Maintenance method
Tripping of circuit breaker	Overload tripping (il indictator shining)	1. Check the breaking current value and acting time of intelligent release. 2. Analyze the load and electric network,exclude the overload if it happens. 3. Match the actual operating current with long delay action current setting value. 4. Press the reset button to reclose the breaker.
	Short circuit tripping ("is" or "it" indicator shining)	1. Check the breaking current value and acting time of intelligent release. 2. Exclude the short circuit fault if it happens. 3. Check the setting value of intelligent release. 4. Check the normal state of breaker. 5. Press the reset button to reclose the breaker.
	Earthing fault tripping  (IG indicator shining)	1.Check the breaking current value and acting time of intelligent release. 2.Exclude the earthing fault if that happens 3.Match the fault current setting value with the actual protection. 4.Press the reset button to reclose the breaker.
	Under-voltage relesase fault: 1. Rated working voltage is less than 70％Ue 2. Fault of control unit	1. Check if the power is on or not. 2. Check the power voltage of the under-voltage release; it shouldn't be less than 85% of Ue. 3. Replace the control unit of the under-voltage release.
	Mechanical interlock acting	Check the working state of two circuit breakers fixed with mechanical interlock
The breaker can't be closed	Intelligent release does't reset (panel raised)	Press the reset button to recluse the breaker
	Secondary circuit of drawer-type breaker isn't connected	Make the breaker to the "making" position ("click" sound will be heard).
	Breaker hasn’t stored energ	Check the secondary circuit: 1. Power voltage of motor shouldn't less than 85％Ue 2. Check the storage mechanism, replace it if necessary.
	Mechanical interlock causing leads to locking of breaker	Check the working state of two circuit breakers fixed with mechanical interlock
	Closing electromagnet: 1. Rated control voltage is less than 85%Ue; 2. Closing electromagnet is damaged	1. Power voltage of closing electromagnet shouldn't less than 85％Ue. 2. Replace the electromagnet.
Tripping after closing the circuit breaker (fault indicator shining)	Tripping immediately may happen due to the following reasons: 1. Short circuit current is closed 2. Delay tripping because the transient current is high when closing. 3. Over current is closed.	1. Check the breaking current value and acting time of the intelligent release. 2. Exclude the occurrence of short circuit faults. 3. Exclude overload faults. 4. Check the normal state of the breaker. 5. Modify the current setting value of the intelligent release. 6. Press the reset button to reclose the breaker.
Circuit breaker can't be opened	The breaker can't be opened manually:  There is fault with mechanical operating mechanism	Check the mechanism, if there is fault happened.
	The breaker can't be opened by motor remotely: 1. There is fault with mechanical operating mechanism 2. power voltage of shunt release is less than 75％Ue 3. Shunt release is damaged	1. Check the mechanism, if there is fault happened. 2. Check if the Power voltage of shunt release is less than 70％Ue or not. 3. Replace shunt release.
Circuit breaker can't store energy	Manual storage can't be realized.	Mechanical fault with the energy-stored device
	Motor storage can't be realized 1. Power voltage of motor energy-stored device is less than 85％Ue. 2. There is mechanical fault with energy-stored device.	1. Power voltage of motor energy-stored device shouldn't be less than 85％Ue. 2. Mechanical fault with the energy-stored device.
Handle of drawer-type circuit breaker can't be drawn in or out	1. There is padlock at the“opening”position 2. Slideway or breaker body isn't pulled into its position.	1. Take away the padlock 2. Pull the slideway or breaker body into its position
Drawer-type breaker can't be drawn out at the "opening" position	1. Handle isn't pulled out 2. Breaker is not totally at the "opening" position	1. Pull out the handle 2. Keep the circuit breaker totally at "opening" position
Drawer-type breaker can't reach the "making" position	1. Something drops into the drawer base, locking the mechanism or causing a mechanism fault. 2. Breaker body doesn't match the frame-size rated current of the drawer base.	1. Check and clean the drawer base, or contact the manufacturer. 2. Match the body with the relevant drawer base.
No display on intelligent release panel	1. Release isn't connected with power. 2. There is a fault with the release.	1. Check if the power is connected or not. 2. Cut off the power, then connect again. Otherwise, contact the manufacturer
	Closing electromagnet: 1. Rated control voltage is less than 85％Ue. 2. Electromagnet is damaged.	1. Check the electromagnet power voltage shouldn't be less than 85％Ue. 2. Replace the closing electromagnet.
The fault indicator is still shining after pressing the clear button.	Fault happened with intelligent release.	Cut off the power, then connect again. Otherwise, contact the manufacturer

User				Qty			Date
Mode	□□ ZYMW2-1600[IV]frame     □ stationary type  □ 3 phase                                                     □ withdraw type   □ 4 phase      Rated Current     In=         A                                                                                                                               □ AC380V(400V)                                                                                                    Rated voltage                                                                                                                               □ 800V
Intelligent Control Motor
Mode ("F" is motor Protection)			Basic Function				Extra function or accessories
L type	□ L2	Long delay; instant (3~10) In				1. MCU monitor 2. Fault status  indicate 3. Loading indicate 4. Fault storage 5. Snap action test		□ MCR closing breaking  and releasing unit; □ pre-alarm Self-diagnosis  OCR releasing alarm unit
	□ L3	Long delay; short delay (3~10) In Instant(10~20) In[Ⅰ frame](4~7) In [Ⅱframe]
	□ L4	Long delay; short delay (3~10) In Instant(10~20) In [Ⅰ frame](4~7) In [Ⅱframe] P to P, P to E protection.
	□ L2/F	Long delay; instant (3~10) In
	□ L3/F	Long delay; short delay (3~10) In Instant (10~20) In, pre-alarm
M type	□ M	Long delay; short delay; instant;  inter-phase earthing protection				1. Status Indicate; 2. Ammeter; 3. Fault storage 4. Temp. Storage 5. testing		□ Loading indicate □ Voltmeter □ MCR closing breaking  and releasing □ pre-alarm Self-diagnosis  OCR releasing alarm unit
	□ M/F	Long delay; short delay; instant; pre-alarm
H type	□ H	1. Long delay; short delay; instant; loading indicate 2. Single phase earthing protection 3. status indicate 4. UI meter 4. faulty storage 5. temp. Storage 6. testing  7. RS485 plug 8. alarming						□ MCR unit □ RS485/232 plug □ ~220 □ ~380 □ ~110 □ DP unit
	□ H/F
Control Volt.		□ ac 220    □ ac 380
Accessory
□ undervoltage trip		□ ac 220    □ ac 380    □ dc 220    □ dc 110
		□ undervoltage delay trip    □ 1s    □ 3s    □ 5s
□ shut tripper		□ ac 220    □ ac 380   □ dc 220    □ dc 110
□ electromagnet		□ ac 220    □ ac 380   □ dc 220    □ dc 110
□ control motor		□ ac 220    □ ac 380   □ dc 220    □ dc 11
□ interlock		□ Horizontal    □ Vertical    □ Door
□ door frame		□ equipped    □ not equipped
□ locker on breaking position			□ equipped    □ not equipped
□ external signal phase CT			□ different value    □ earth current
□ connection type			□ Horizontal    □ Vertical